Method

Start with the dressing. Place the olive oil and sage in a small pan and put on medium heat. Remove as soon as the sage begins to sizzle and leave aside to cool. Remove the sage leaves, transfer the oil to a bowl and whisk the infused oil together with the lemon juice, ¼ teaspoon of salt and ¼ teaspoon of black pepper.
Place all of the herbs, leaves and mange tout in a large bowl. Scatter over the seed mix by hand. Just before serving, pour over the dressing. Lightly toss everything together and serve immediately.